[Solution] Multiplication by a diagonal matrix. Suppose that A is an m * n matrix, D is a diagonal matrix, and B=D A . Describe B in terms of A and the
Question: Multiplication by a diagonal matrix. Suppose that \(A\) is an \(m \times n\) matrix, \(D\) is a diagonal matrix, and \(B=D A .\) Describe \(B\) in terms of \(A\) and the entries of \(D\). You can refer to the rows or columns or entries of \(A\).
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